Detecting single infrared photons with 93% system efficiency
Francesco Marsili,Varun B. Verma,Jeffrey A. Stern,Sean D. Harrington,Adriana E. Lita,Thomas Gerrits,Igor Vayshenker,Burm Baek,M. D. Shaw,Richard P. Mirin,Sae Woo Nam +10 more
TLDR
In this article, a fiber-coupled single-photon detection system using amorphous tungsten silicide superconducting nanowire detectors was developed, and the system detection efficiency was higher than 90% in the wavelength range between 1520 nm and 1610 nm.Abstract:
Researchers develop a fiber-coupled single-photon-detection system using amorphous tungsten silicide superconducting nanowire single-photon detectors. The system detection efficiency is higher than 90% in the wavelength range between 1520 nm and 1610 nm. The device dark-count rate, timing jitter and reset time are 1 cps, 150 ps and 40 ns, respectively.read more
Citations
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Proceedings ArticleDOI
High-operating-temperature superconducting nanowire single photon detectors
Angel E. Velasco,Daniel Cunnane,Narendra Acharya,Ryan M. Briggs,Andrew D. Beyer,Matthew D. Shaw,Boris S. Karasik,Matthäus A. Wolak,Xiaoxing Xi,Francesco Marsili +9 more
TL;DR: In this paper, a 5 nm thick, 100 nm wide MgB 2 nanowires with single-photon sensitivity at 635 nm wavelength in the operating-temperature range 3-10 K were presented.
Journal ArticleDOI
Waveguide-coupled superconducting nanowire single-photon detectors based on femtosecond laser direct writing
Hou Xintong,Xiao-Yun Xu,Guang-Zhao Xu,Lixing You,Xian-Min Jin,Hao Li,Zhang Weijun,Ruo-Jing Ren,Xuan-Lun Huang,Zhen Wang +9 more
TL;DR: In this article, a waveguide end face-nanowire optical coupling structure was designed and verified, and the simulation results showed that the FLDW waveguide-coupled SNSPD device, which had a target wavelength of 780 nm, can achieve 87% optical absorption.
Proceedings ArticleDOI
Unconditional Shot-Noise-Limit Violation in Photonic Quantum Metrology
Geoff J. Pryde,Sergei Slussarenko,Morgan M. Weston,Helen M. Chrzanowski,Lynden K. Shalm,Varun B. Verma,Sae Woo Nam +6 more
TL;DR: In this article, the first unconditional violation of the shot noise limit in photonic NOON-state interferometry was demonstrated using ultra-high-efficiency source and detectors without employing posts election, or correction for loss and imperfections.
Journal ArticleDOI
Simple Efficient Decoders for Quantum Key Distribution Over Quantum Repeaters with Encoding
Yumang Jing,Mohsen Razavi +1 more
TL;DR: This work proposes two decoder structures for encoded repeaters that not only improve system performance but also make the implementation aspects easier by removing two-qubit gates from the QKD decoder.
Journal ArticleDOI
Experimental Demonstration of a Hybrid-Quantum-Emitter Producing Individual Entangled Photon Pairs in the Telecom Band.
Geng Chen,Yang Zou,Wen-Hao Zhang,Zi-Huai Zhang,Zong-Quan Zhou,De-Yong He,Jian-Shun Tang,Bi-Heng Liu,Ying Yu,Guo-Wei Zha,Ni Haiqiao,Zhi-Chuan Niu,Yong-Jian Han,Chuan-Feng Li,Guang-Can Guo +14 more
TL;DR: Benefiting from the desirable optical properties of QD-NWs and the extremely high nonlinear conversion efficiency of PPLN waveguides, it is demonstrated in principle that IEPPs in the telecom band can be created by combining a single Qd-NW and a nonlinear crystal waveguide.
References
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TL;DR: The current status of single-photon-source and single-Photon-detector technologies operating at wavelengths from the ultraviolet to the infrared are reviewed and applications of these technologies to quantum communication are discussed.